Rose plant named ‘Poulcas070’

ABSTRACT

A new garden rose plant of the Compact Floribunda class which has abundant, white flowers and attractive foliage. This new and distinct variety has shown to be uniform and stable in the resulting generations from asexual propagation.

Botanical designation: Rosa hybrida.

Variety denomination: ‘Poulcas070’.

This application claims priority to Plant Breeder's Rights ApplicationNumber 2021/2365, which was filed at the Community Plant Variety RightsOffice in the European Union on Sep. 24, 2021, the contents of which arehereby incorporated by reference for all purposes.

SUMMARY OF THE INVENTION

The present invention constitutes a new and distinct variety of roseplant which originated from a controlled crossing between the femaleseed parent, an unnamed seedling, and the male pollen parent, also anunnamed seedling. Both of the parent varieties are non-patented.

The two parents were crossed during the summer of 2010 and the resultingseeds were planted in a controlled environment in Fredensborg, Denmark.The new variety, named ‘Poulcas070’, originated as a single seedlingfrom the stated cross.

The new variety may be distinguished from its male pollen parent andfemale seed parent primarily by the following characteristics. The malepollen parent plant has a growth height of about 25 cm while the newvariety ‘Poulcas070’ grows to 40 cm in height. The female seed parentplant has single petal white flowers while the new variety has verydouble, white flowers.

The objective of the hybridization of this rose variety was to create anew and distinct variety with unique qualities, such as:

-   -   1. Uniform and abundant white flowers;    -   2. Vigorous, but compact growth when propagated on its own        roots; and    -   3. Exceptional disease resistance.

This combination of qualities is not present in previously availablecommercial cultivars of this type, known to the inventor, anddistinguish ‘Poulcas070’ from all other varieties of which we are aware.

As part of the rose development program, Mogens N. Olesen germinated theseeds from the aforementioned hybridization during winter of 2010 andconducted evaluations on the resulting seedlings in a controlledenvironment in Fredensborg, Denmark. ‘Poulcas070’ was selected in thespring of 2011 by the inventor as a single plant from the progeny of theaforementioned hybridization.

Asexual reproduction of ‘Poulcas070’ by rooted cuttings was first doneby Mogens N. Olesen in the nursery in Fredensborg, Denmark in July,2011. This initial and other subsequent asexual propagations conductedin controlled environments have demonstrated that the characteristics of‘Poulcas070’ are true to type and are transmitted from one generation tothe next.

DESCRIPTION OF THE DRAWING

The accompanying color illustrations show as true as is reasonablypossible to obtain in color photographs of this type, the typicalcharacteristics of the buds, flowers, leaves, and stems, of‘Poulcas070’.

Specifically illustrated in FIG. 1 of the drawings are an open flowerviewed from the top, flower petals detached revealing reproductiveflower parts, sepals detached revealing the receptacle, and flower budsat various stages of opening.

Specifically illustrated in FIG. 2 of the drawings are a cluster offlowers on the branch, mature leaves, mature bare stem revealingprickles, juvenile leaves, and juvenile stems. Plants shown are 2 yearsof age.

DETAILED DESCRIPTION OF THE VARIETY

The following is a description of ‘Poulcas070’, as observed in itsgrowth outdoor in Odense Denmark. Observed plants are 18 months of age,and were grown on their own roots in 30 cm containers. Color referencesare made using The Royal Horticultural Society (London, England) ColourChart, 2001, except where common terms of color are used.

For a comparison, several physical characteristics of the rose variety‘Poulcas043’, U.S. Plant Pat. No. 27,708 are compared to ‘Poulcas070’ inChart 1.

CHART 1 ‘Poulcas070’ ‘Poulcas043’ Petal Count 80 65 Flower Diameter 85mm 70 mm General Tonality White Group 155B White Group 155D of FlowerColor

FLOWER AND FLOWER BUD

-   Blooming habit: Continuous.-   Flower bud:    -   -   Size.—Upon opening, 21 mm in length from base of receptacle            to end of bud. Bud diameter is 14 mm.        -   Bud form.—Urceolate.        -   Bud color.—As sepals divide petals are Yellow-White Group            158A with intonations of Red Group 37A.        -   Sepal inner surface.—Color: Yellow-Green Group 146D with            intonations of Greyed-Purple Group 183B. Surface: Lightly            pubescent.        -   Sepal outer surface.—Color: Yellow-Green Group 144A.            Texture: Smooth.        -   Sepal shape.—Apex: Cirrhose. Base: Flat at union with            receptacle.        -   Sepal margin.—Margins have moderate foliaceous appendages on            three of the five sepals.        -   Sepal size.—About 32 mm long, 15 mm wide.        -   Receptacle.—Texture: Smooth. Size: 11 mm in height, 7 mm            wide. Color: Yellow-Green Group 144A. Shape: Long            campanulate.        -   Pedicel.—Surface: Smooth. Length: 30 mm. Diameter: 3 mm on            average. Color: Yellow-Green Group 144A with intonations of            Greyed-Orange Group 156B. Strength: Strong.        -   Peduncle.—Length: Varying from 2 to 10 cm. Diameter: About            4 mm. Color: Yellow-Green Group 144A with intonations of            Greyed-Orange Group 166B. Texture: Smooth.-   Flower bud development: Flower buds are borne in clusters of up to    28 flower buds per flowering branch on average, developing as a    thyrse.-   Flower bloom:    -   -   Fragrance.—Strong perfume.        -   Duration.—The blooms have a duration on the plant of            approximately 14 days. Petals fall cleanly away from plant            after flowers have fully matured.        -   Size.—Flower diameter is about 85 mm when open. Flower depth            is 30 mm.        -   Flower shape.—Rosette, very double flowers filled with            masses of tiny petals.        -   Shape of flower, side view.—The upper portion is flat            convex. The lower portion is concave.-   Petalage: Under normal conditions, flowers have about 80 petals.-   General tonality of flower: Open flowers are White Group 155B.-   Petal color:    -   -   Upon opening, outer petals.—Upper surface: White Group 155B.            Lower surface: White Group 155B.        -   Upon opening, inner petals.—Upper surface: White Group 155B.            Lower surface: White Group 155B.        -   Basal petal spots, upon opening.—Upper surface: No            distinctive coloration at the petal base. Lower surface:            Yellow Group 4B.        -   After opening, outer petals.—Upper surface: White Group            155B. Lower surface: White Group 155B.        -   After opening, inner petals.—Upper surface: White Group            155B. Lower surface: White Group 155B.        -   Basal petal spots, after opening.—Upper surface: No            distinctive coloration at the petal base. Lower surface:            Yellow Group 4B.-   Petals:    -   -   Petal reflex.—Flat.        -   Margin.—Several clefts 2 or more. Moderate undulations.        -   Shape.—Broad and elliptic. Apex shape: Rounded. Base shape:            Acute.        -   Size.—35 mm (l)×41 mm (w).        -   Texture.—Smooth.        -   Thickness.—Average.-   Petaloids:    -   -   Size.—10 mm (l) by 5 mm (w).        -   Quantity.—About 20.        -   Shape.—Elliptical with an acute base and acute apex.        -   Color.—-   Reproductive flower parts:    -   -   Pollen.—None observed.        -   Anthers.—Size: 2 mm in length. Color: Greyed-Yellow Group            160A. Quantity: 33 on average.        -   Filaments.—Color: Yellow Group 4B. Length: 5 mm.        -   Pistils.—Length: 9 mm. Quantity: 25 on average.        -   Stigmas.—Color: Green-White Group 157A.        -   Styles.—Color: Green-White Group 157A.        -   Location of stigmas.—Superior in location relative to the            length of the filaments and the height of the anthers.        -   Hips.—None Observed.

PLANT

-   Plant growth: Upright, bushy. Plants are 40 cm in height, and 40 cm    wide.-   Stems:    -   -   Color of juvenile growth.—Yellow-Green Group 144A with            intonations of Greyed-Red Group 181B.        -   Color of mature growth.—Yellow-Green Group 146C with            intonations of Greyed-Orange Group 166C.        -   Length.—Canes are about 20 cm from the base of the plant to            the flowering portion.        -   Diameter.—About 6 mm.        -   Internodes.—On mature canes about 35 to 55 mm between nodes.        -   Surface texture.—Young wood: Smooth. Older wood: Smooth.-   Long prickles:    -   -   Incidence.—9 prickles per 10 cm of stem.        -   Size.—Average length of prickles on mature stems is 10 mm.        -   Shape.—Upper portion is linear. Lower portion is concave.        -   Color.—Juvenile prickles: Greyed-Red Group 180A. Mature            prickles: Greyed-Red Group 181A.-   Plant foliage:    -   -   Compound leaf.—160 mm (l)×120 (w).        -   Quantity.—2 leaves per 10 cm of stem on average.        -   Leaf bearing angle to the stem.—45 degrees.        -   Color of juvenile foliage.—Upper side: Yellow-Green Group            144A shaded with intonations of Greyed-Red Group 178A. Lower            side: Yellow-Green Group 144A shaded with intonations of            Greyed-Red Group 178A.        -   Color of mature foliage.—Upper side: Yellow-Green Group            147A. Lower side: Yellow-Green Group 147B.-   Plant leaves and leaflets:    -   -   Stipules.—Size: 20 mm long, 3 to 4 mm wide. Quantity: 2 per            compound leaf. Shape: Linear, slightly broad based with            outward extending apex. Margins: Finely serrated. Color:            Yellow-Green Group 147A        -   Petiole.—Length: 35 mm. Diameter: 2 mm. Upper surface color:            Yellow-Green Group 144A. Lower surface color: Yellow-Green            Group 144A.        -   Rachis.—Length: 50 mm. Upper surface color: Yellow-Green            Group 144A. Lower surface color: Yellow-Green Group 144A.        -   Leaflet.—Quantity: Normally 5 leaflets. Margins: Serrated.            Size: Terminal leaflets are about 70 mm long, 48 mm wide.            Shape: Generally Round or cordate. Base: Rounded. Apex:            Acute. Texture: Smooth. Thickness: Average. Arrangement: Odd            pinnate. Venation: Reticulate. Glossiness: Very glossy.-   Disease resistance: Above average resistance to powdery mildew    Sphaerotheca pannosa var. rosae, downy mildew Peronospora sparsa,    rust Phraginidium spp., black spot Diplocaipon rosae, and Botrytis    cinerea under normal growing conditions.-   Cold hardiness: The variety is tolerant to USDA Cold Hardiness Zone    6.-   Heat tolerance: The variety has been found to be suitable for    climate conditions found in the American Horticulture Society heat    zone 7.

I claim:
 1. A new and distinct variety of rose plant named ‘Poulcas070’substantially as described and illustrated herein.